Transmission mechanism



BENGT M. W. HANSON, OF HARTFORD, CONNECTICUT.

TRANSMTSSION MECHANISM.

Application filed February 21, 1920. Serial No. 360,339.

To all whom it' may concern:

Be it known that l, Bitner M. YV. HANsoN, a citizen of the UnitedStates, and a resident of Hartford, county of Hartford, State ofConnecticut, have invented certain new and useful improvements in aTransmission Mechanism, of which the following is a speciication.

This invention relates to transmission mechanism and while havinggeneral application finds 'particular advantage for use generally inmetal working machines. The

Y invention has as its object to provide a transmission mechanism ofthis sort having features of novelty and advantage.

"fn the accompanying drawings, there is shown one embodiment of theinvention, but it is to be understood that the invention is capable ofembodiment in various forms and is susceptible of modification andchanges,- the pres ant disclosure being by way of illustration only.

ln describing the embodiment of the invention herein illustrated,conventional terms will be used, but it is to be understood that theyare used solely for the purposeof description and are not to he taken ashaving any limiting effect. f

in the accompanying drawings:

Fig. l is a vertical section view taken substantially online l-l of Fig.2; and

Fig. 2 is a sectional view taken substantially on line 2 2 of Fig. l.

Referring to the drawings in detail, a, denotes a base, housing orcasing in which are journaled a pair of shafts l2 and 24, one of which(in the present instance shaft l2) may be referred to as the driveshaft; the other heing driven through the drive shaft. tilidable on thedrive shaft l2 is a rocker 2O straddling a gear 2l keyed tothe driveshaft and carrying an intermediate gear 22 adapted to be thrown intomesh with the several sections of a stepped or cone gear 23 fixed to theintermediate or driven shaft 24. This latter shaft may be provided witha fixed pinion for driving a third shaft, not shown. 1t is evident thatthe shaft l2 may be driven through any suitable mechanism at any desiredspeed or speeds. The handle of the rocker, as usual, extends through anopening in the front wall of the housing, and this handle may beprovided with a plunger 36 for locking the rocker in its severalpositions.

When the transmission mechanism is in operation, the drive shaft l2tends to flex or spring in a direction away from the cone gear 23 owingto the fact that the `shaft is supported only at its ends so as topermit the shifting of the rocker. In accordance with the presentinvention, i provide for the purpose of preventing vsuch springing ofthe 'drive shaft a fixed support or brace 50 having a surface inparallelism with the drive shaft, and on which surface the rocker 20,when it is shifted from one position to another, is adapted to slide. Inthe present illustrative disclosure of the invention, this brace ispreferably shown as having a partior semicylindrical surface, the axisof which is coincident with the axis of the drive shaft and the edge 5lof the rocker which slides on the surface of the brace is similarlycurved so as to permit of angular adjustment of the rocher. The brace isshown as having its ends apertured to receive the drive shaft.

l claim as my invention 1. in a transmission mechanism, a shaft, aslidable gear thereon, a rocker for shifting said gear and on saidshaft, and a supporting member on which said rocker slides.

2. In a transmission mechanism, a shaft, a slidable gear thereon, arocker journalled on said shaft for shifting said gear and having asurface concentric to said shaft, and a member having a similarly curvedsurface, supporting said rocker.

3. in a transmission mechanism, a shaft, a slidable gear thereon, arocker ournalled on said shaft for shifting said gear, an intermediategear carried by said rocker, and a supporting member upon which saidrocker slides and located to that side of said shaft opposite saidintermediate gear.

BENGT M. W. HANSON.

